A glue coating device capable of realizing cleaning-free and a sealing edge machine

Abstract

This invention relates to the field of edge banding equipment technology, specifically disclosing a glue application device and edge banding machine that can achieve cleaning-free operation. By regulating the flow of glue through a closed glue channel and a glue injection valve, the glue is ensured to be supplied in a sealed environment, avoiding exposure to air. At the same time, the use of a glue storage mechanism is eliminated, and the amount of melt glue retention is reduced, thereby reducing glue deterioration and cleaning needs, thus achieving a cleaning-free function and making it convenient for users.

Description

Technical Field

[0001] This application relates to the field of edge banding equipment technology, and more specifically, to an adhesive application device and edge banding machine that can achieve cleaning-free operation. Background Technology

[0002] In existing edge banding machines, the adhesive application mechanism is the core functional component, responsible for the crucial task of uniformly applying molten or liquid adhesive to the cross-section of the board and the bonding surface of the edge band. Current adhesive application mechanisms generally employ a hot-melt mechanism to heat solid adhesive granules or blocks, transforming them into a molten state before transferring them to an open adhesive storage chamber for temporary storage.

[0003] However, when the adhesive remains in the storage chamber for too long, its physicochemical properties are easily degraded, manifesting as hardening and peeling of the adhesive surface. More significantly, when it is necessary to change the color or type of adhesive during production, the entire adhesive application mechanism must be disassembled from the edge banding machine, and the residual adhesive in the chamber must be thoroughly removed manually. This operation not only consumes a large amount of time and manpower but also results in considerable waste of adhesive materials, severely restricting production continuity and economic efficiency.

[0004] There is currently no effective technical solution to the above problems. Summary of the Invention

[0005] The present invention aims to solve the technical problems mentioned in the background art and provides a glue application device and edge banding machine that can achieve cleaning-free operation. The purpose is to enable the device to be cleaned after applying glue, thereby improving the efficiency of use.

[0006] To solve the aforementioned technical problems, the solution proposed in this application is as follows: As one aspect of this application, a glue application device capable of achieving cleaning-free operation is provided. This glue application device is installed on one side of the conveyor line of an edge banding machine, and the device includes: A glue supply assembly, comprising a glue supply unit and a glue supply tube connected to the glue supply unit; An adhesive application assembly, comprising an adhesive application mounting base and an adhesive application unit mounted on the adhesive application mounting base; An injection unit is provided between the glue supply component and the glue application component. The glue injection unit includes a glue injection valve seat and a glue injection valve; The glue injection valve seat is fixedly assembled on the glue application mounting base. The glue injection valve seat has a closed glue channel inside. The glue inlet end of the glue channel is sealed and connected to the glue supply component through the glue supply pipe. The glue outlet end of the glue channel is connected to the glue application mounting base. The glue injection valve is mounted on the glue injection valve seat, and a piston rod is provided on the glue injection valve and the piston rod is located in the glue channel. The glue supply assembly is used to provide glue input. The glue enters the glue channel of the glue injection valve seat along the glue supply pipe and is then supplied to the glue application unit of the glue application assembly. The glue injection valve is used to control the flow of glue in the glue channel.

[0007] Furthermore, the adhesive mounting base is provided with an adhesive outlet channel, which is connected to the adhesive channel. The adhesive supplied by the adhesive supply component passes through the adhesive channel and the adhesive outlet channel in sequence and is then output from the outlet of the adhesive outlet channel. The ejection direction of the glue outlet of the glue outlet channel forms an angle of 15°-30° with the tangent direction of the coating working surface on the glue coating unit.

[0008] Furthermore, the glue injection valve includes a first glue injection valve and a second glue injection valve, and the glue channel includes a first glue channel and a second glue channel. The first glue injection valve is arranged on the path of the first glue channel, and the second glue injection valve is arranged on the path of the second glue channel. An adhesive buffer chamber is provided inside the adhesive mounting base. The adhesive buffer chamber is connected to the adhesive dispensing channel and is also connected to the first adhesive channel and the second adhesive channel.

[0009] Furthermore, the adhesive application mounting base has an adhesive application working chamber, and the adhesive application unit is installed in the adhesive application working chamber; The adhesive application unit includes: A glue-applying shaft, which is rotatably mounted on a glue-applying mounting base; And a scraper shaft, which is rotatably mounted on an adhesive application mounting base and is disposed adjacent to the adhesive application shaft.

[0010] Furthermore, the adhesive application assembly also includes: A first heating element is installed inside the adhesive coating shaft. The first heating element is used to heat the adhesive coating shaft or to keep the adhesive coating shaft at a set temperature. The second heating element is mounted on the adhesive application mounting base and is used to heat the adhesive application mounting base or keep the adhesive application mounting base at a set temperature.

[0011] Furthermore, the adhesive application assembly also includes: A shaft adjustment device, comprising an adjustment base, a scraper shaft adjustment assembly, and a position display, wherein the adjustment base is mounted on a glue application mounting base, and the scraper shaft adjustment assembly is mounted on the adjustment base; The scraper shaft adjustment assembly includes a scraper shaft adjustment cylinder and an adjustment rod. The drive end of the scraper shaft adjustment cylinder is connected to one end of the adjustment rod, and the other end of the adjustment rod is fixedly connected to the top end of the scraper shaft. The adjustment rod is used to drive the scraper shaft to rotate by the extension and retraction drive of the scraper shaft adjustment cylinder and to adjust and limit the rotation position of the scraper shaft. The position display is mounted on the adjustment base and is used to indicate the position of the scraper shaft and the adjustment distance.

[0012] Furthermore, the adhesive application assembly also includes: A photoelectric sensor is installed on the adhesive application mounting base. The detection end of the photoelectric sensor is aligned with the adhesive application working chamber between the adhesive application shaft and the adhesive scraper shaft. The photoelectric sensor is used to monitor the amount of adhesive liquid in the adhesive application working chamber.

[0013] Furthermore, the adhesive application assembly also includes: An adhesive base, on which the adhesive mounting bracket is mounted; The adhesive-coated base includes: A fixed plate, on one side of which a first driving element and a first slide rail are mounted; A sliding plate is slidably mounted on a fixed plate via a first slide rail, and the sliding plate is connected and fixed to an adhesive mounting base. A spring adjustment assembly is mounted on the sliding plate, and the operating end of the spring adjustment assembly is connected to the adhesive mounting base. The sliding plate is moved by the first driving element, which in turn moves the spring adjustment assembly and the glue-applying mounting base as a whole. The position of the adhesive mounting base is adjusted by a spring adjustment assembly to provide contact pressure to the substrate to be coated as it passes through the adhesive application work position.

[0014] Furthermore, the adhesive application assembly also includes: An adhesive positioning seat, on which the adhesive base is mounted; The adhesive positioning seat includes: A drive positioning plate, wherein a second slide rail is provided on the drive positioning plate; A movable plate, which is slidably mounted on a second slide rail, and the fixed plate is mounted on the movable plate; A positioning drive element is mounted on a drive positioning plate, and the drive end of the positioning drive element is connected to the movable plate. The positioning drive element is used to adjust the position of the movable plate on the second slide rail.

[0015] As a second aspect of this application, an edge banding machine is provided, which uses the adhesive applicator as described above.

[0016] This application provides a glue application device and edge banding machine that can achieve cleaning-free operation. By regulating the flow of glue through a closed glue channel and a glue injection valve, the glue is supplied in a sealed environment, avoiding exposure to air. At the same time, it eliminates the need for a glue storage mechanism, reduces molten glue retention, thereby reducing glue deterioration and cleaning requirements, and thus achieving a cleaning-free function, making it convenient for users. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of an adhesive applicator that can achieve cleaning-free application on an edge banding machine, as provided in an embodiment of this application. Figure 2 A schematic diagram of the structure of an adhesive coating component in an adhesive coating device that enables cleaning-free application, provided as an embodiment of this application; Figure 3 This is a schematic diagram of the adhesive application component in an adhesive application device that enables cleaning-free application, provided as an embodiment of this application. Figure 4 A partial structural cross-sectional view of an adhesive application component in an adhesive application apparatus capable of achieving cleaning-free operation, provided as an embodiment of this application; Reference numerals: 1. Glue supply assembly; 110. Glue supply unit; 120. Glue supply pipe; 2. Glue application assembly; 210. Glue application mounting base; 220. Glue application unit; 3. Glue injection unit; 310. Glue injection valve seat; 320. Glue injection valve; 311. Glue channel; 211. Glue application working chamber; 221. Glue application shaft; 222. Glue scraper shaft; 212. Glue outlet channel; 213. Glue buffer chamber; 230. Shaft adjustment device; 231. Adjustment base; 232. 2321. Squeegee shaft adjustment assembly; 2322. Squeegee shaft adjustment cylinder; 2323. Adjustment rod; 2324. Position display; 240. Photoelectric sensor; 250. Glue application base; 251. Fixing plate; 252. First driving element; 253. First slide rail; 254. Sliding plate; 255. Spring adjustment assembly; 260. Glue application positioning seat; 261. Drive positioning plate; 262. Second slide rail; 263. Movable plate; 264. Positioning drive element. Detailed Implementation

[0018] To better illustrate the present invention, the invention will now be described in further detail with reference to the accompanying drawings.

[0019] It should be understood that, in order to make the objectives, technical solutions, and advantages of the embodiments of this disclosure clearer, the technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this disclosure, and not all embodiments. The components of the embodiments of this disclosure described and shown in the accompanying drawings can generally be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of this disclosure provided in the accompanying drawings is not intended to limit the scope of the claimed disclosure, but merely represents selected embodiments of this disclosure. All other embodiments obtained by those skilled in the art based on the embodiments of this disclosure without inventive effort are within the scope of protection of this disclosure.

[0020] The following description uses at least one specific embodiment as an example. In this embodiment: Firstly, such as Figures 1 to 4 As shown, a glue application device capable of achieving cleaning-free operation is provided. This device is installed on one side of the conveyor line of an edge banding machine and includes: The adhesive supply assembly 1 includes an adhesive supply unit 110 and an adhesive supply tube 120 connected to the adhesive supply unit 110. The core part of the adhesive supply assembly 1 typically includes adhesive storage, heating and pumping functions, used to transform the adhesive from a stored state to a deliverable state, such as forming a liquid adhesive. The adhesive supply tube 120 serves as a transport tool for the adhesive supply unit 110. The adhesive application assembly 2 includes an adhesive application mounting base 210 and an adhesive application unit 220 mounted on the adhesive application mounting base 210. Among them, a glue injection unit 3 is provided between the glue supply component 1 and the glue application component 2; The glue injection unit 3 includes a glue injection valve seat 310 and a glue injection valve 320; The glue injection valve seat 310 is fixedly assembled on the glue application mounting base 210. The glue injection valve seat 310 has a closed glue channel 311 inside. The glue inlet end of the glue channel 311 is sealed and connected to the glue supply assembly 1 through the glue supply pipe 120. The glue outlet end of the glue channel 311 is connected to the glue application mounting base 210. The glue injection valve 320 is mounted on the glue injection valve seat 310, and a piston rod is provided on the glue injection valve 320 and the piston rod is located in the glue channel 311; The glue supply assembly 1 is used to provide glue input. The glue enters the glue channel 311 of the glue injection valve seat 310 along the glue supply pipe 120, and is then supplied to the glue application unit of the glue application assembly 2. The glue injection valve 320 is used to control the flow of glue in the glue channel 311.

[0021] Specifically, this embodiment provides a glue application device that enables cleaning-free operation. This device is designed to be installed on one side of the conveyor line of an edge banding machine to perform the glue application operation as the sheet material passes through.

[0022] The adhesive application device is installed on one side of the conveyor line of the edge banding machine, allowing the board to pass through the adhesive application position during transport. The adhesive supply assembly 1 is positioned away from the adhesive application position. The adhesive supply unit 110 stores the adhesive to be applied; for example, it may have multiple adhesive storage containers and can hold various types or colors of adhesive. After forming a molten or liquid adhesive, it is delivered to the adhesive application position via the adhesive supply pipe 120. The other end of the adhesive supply pipe 120 is sealed to the adhesive inlet of the glue injection unit 3.

[0023] The glue dispensing unit 3 includes a glue dispensing valve seat 310 and a glue dispensing valve 320. The glue dispensing valve seat 310 is fixed on the glue application mounting base 210 and has a closed glue channel 311 inside. The glue inlet end of the glue channel 311 is connected to the glue supply pipe 120 to ensure that the glue can flow smoothly from the glue supply assembly 1. The glue outlet end of the glue channel 311 is directly connected to the glue application mounting base 210, so that the glue can be delivered to the glue application unit 220 of the glue application assembly 2 through the glue application mounting base. The glue dispensing valve 320 is mounted on the glue dispensing valve seat 310, and its internal piston rod is precisely positioned in the glue channel 311. When glue application is required, the piston rod of the glue dispensing valve 320 moves, opening the glue channel 311, allowing the glue to flow from the glue supply assembly 1 through the glue supply pipe 120, the glue channel 311 of the glue dispensing valve seat 310, and finally to the glue application unit of the glue application assembly 2. The adhesive application unit 220 then begins to apply adhesive to the cross-section of the board material it passes through. When the adhesive application task is completed or needs to be paused, the piston rod of the adhesive injection valve 320 moves to close the adhesive channel 311, thereby cutting off the flow of adhesive.

[0024] As described above, the adhesive is only delivered to the application position when needed and remains closed in the adhesive channel 311 inside the dispensing valve seat 310. This avoids the problems of adhesive aging, peeling, or color change caused by prolonged exposure to air. Simultaneously, because the adhesive channel 311 is closed and the dispensing valve 320 can control the flow of adhesive, the amount of residual adhesive inside the application assembly 2 is significantly reduced. When a different color adhesive needs to be changed, simply empty the adhesive in the dispensing assembly 1 and inject new adhesive; there is no need for cumbersome disassembly and cleaning of the application assembly 2. This achieves a cleaning-free operation, significantly saving time and manpower and reducing adhesive waste.

[0025] In this embodiment, it is further proposed that an adhesive outlet channel 212 is provided in the adhesive mounting base 210. The adhesive outlet channel 212 is connected to the adhesive channel 311. The adhesive supplied by the adhesive supply assembly 1 passes through the adhesive channel 311 and the adhesive outlet channel 212 in sequence and is output from the outlet of the adhesive outlet channel 212. The ejection direction of the adhesive outlet of the adhesive channel 311 forms an angle of 15°-30° with the tangent direction of the coating working surface on the adhesive unit 220.

[0026] The adhesive dispensing channel 212 within the adhesive mounting base 210 is a structure used to guide the adhesive from the adhesive channel 311 to the adhesive application unit 220. This dispensing channel 212 can be a pipe with a smooth inner wall and a circular cross-sectional shape to accommodate different adhesive flow rates and application requirements. Providing the dispensing channel 212 ensures smooth transfer of adhesive from the dispensing unit 3 to the adhesive application unit 220, which is essential for achieving precise adhesive application.

[0027] The outlet of the adhesive channel 311 forms an angle of 15°-30° with the tangent direction of the coating surface on the coating unit 220. The outlet of the adhesive channel 311 is the port where the adhesive finally leaves the channel and contacts the coating unit 220. The coating surface refers to the surface of the coating unit 220 that actually contacts the adhesive and is coated. The tangent direction refers to the direction of movement of the coating surface at the adhesive contact point. The relative position and angle of the dispensing valve seat 310 or the coating mounting seat 210 can be adjusted to create a specific tilt angle between the outlet and the coating surface of the coating unit 220. This angle ensures that the adhesive contacts the coating unit 220 at a suitable angle, which helps to spread the adhesive evenly, reduces air bubbles, and thus improves coating smoothness and adhesion.

[0028] In this embodiment, the glue injection valve 320 is further proposed to include a first glue injection valve and a second glue injection valve, and the glue channel 311 includes a first glue channel and a second glue channel. The first glue injection valve is arranged on the path of the first glue channel, and the second glue injection valve is arranged on the path of the second glue channel. An adhesive buffer chamber 213 is constructed inside the adhesive mounting base 210. The adhesive buffer chamber 213 is connected to the adhesive outlet channel 212 and is also connected to the first adhesive channel and the second adhesive channel. The adhesive that has passed through the first adhesive channel and the second adhesive channel gathers in the adhesive buffer chamber 213 and is then output through the adhesive outlet channel 212.

[0029] Specifically, the adhesive supplied by the adhesive supply assembly 1 is diverted to a first adhesive channel and a second adhesive channel. The first and second injection valves are independently arranged along their respective adhesive channel paths 311, allowing the operator to control the flow or interruption of adhesive in each channel. For example, both valves can be opened simultaneously to achieve a larger flow rate of adhesive, or only one valve can be opened to achieve a smaller flow rate. Furthermore, if the adhesive supply assembly 1 supplies two different types of adhesive, or if different proportions of the same adhesive need to be mixed, precise mixing of the adhesive can be achieved in the adhesive buffer chamber 213 within the adhesive application mounting base 210 by adjusting the first and second injection valves respectively. The adhesive passing through the first and second adhesive channels converges in the adhesive buffer chamber 213 constructed within the adhesive application mounting base 210. This adhesive buffer chamber 213 serves as a mixing and buffering area for the adhesive, ensuring that adhesive from different channels can be thoroughly and evenly mixed here, avoiding the unevenness that may occur when mixing directly on the surface of the adhesive application unit. Subsequently, the well-mixed adhesive solution is collected and stably output through the adhesive outlet channel 212 to the adhesive coating unit 220 of the adhesive coating assembly 2.

[0030] The above technical solution overcomes the limitations of a single adhesive channel 311 and dispensing valve 320 in adhesive flow control and multi-component mixing. By introducing a first dispensing valve and a second dispensing valve, along with corresponding first and second adhesive channels, and setting up an adhesive buffer chamber 213 for adhesive convergence and mixing, the adhesive type can be adjusted according to actual coating requirements, making online mixing of multi-component adhesives possible.

[0031] In this embodiment, an adhesive application working cavity 211 is provided on the adhesive application mounting base 210, and an adhesive application unit 220 is installed in the adhesive application working cavity 211. The adhesive application unit 220 includes: an adhesive application shaft 221, which is rotatably mounted on the adhesive application mounting base 210; and a scraper shaft 222, which is rotatably mounted on the adhesive application mounting base 210 and is disposed adjacent to the adhesive application shaft 221.

[0032] Specifically, the adhesive supplied by the adhesive supply assembly 1 enters the adhesive channel 311 of the adhesive injection valve seat 310 through the adhesive supply pipe 120, and after being regulated by the adhesive injection valve 320, it is finally supplied to the adhesive application working chamber 211 in the adhesive application mounting base 210.

[0033] In the above embodiments, the adhesive applicator works in concert with the adhesive supply component 1, the adhesive dispensing unit 3, and the adhesive application component 2 to apply the adhesive to the workpiece. However, during implementation, especially when using temperature-sensitive adhesives (such as hot melt adhesives), the adhesive is prone to cooling due to changes in ambient temperature during transport and application, leading to increased viscosity, affecting the uniformity and stability of the coating, and may even cause blockage of the adhesive path, thereby affecting the no-clean effect.

[0034] In this regard, this application further proposes that the adhesive application assembly 2 also includes a first heating tube (not shown) and a second heating tube (not shown). The first heating tube (not shown) is installed inside the adhesive application shaft 221 and is used to heat the adhesive application shaft 221 or to maintain the adhesive application shaft at a set temperature; the second heating tube (not shown) is installed on the adhesive application mounting base 210 and is used to heat the adhesive application mounting base 210 and the adhesive outlet channel 212 within the adhesive application mounting base 210 or to maintain the adhesive application mounting base at a set temperature.

[0035] The first heating element (not shown) and the second heating element (not shown) are designed to address the temperature issue of the adhesive during the coating process. Specifically, when the adhesive supply assembly 1 supplies the adhesive and enters the adhesive channel 311 of the dispensing valve seat 310 through the dispensing pipe 120, the adhesive flows further to the coating assembly 2. During this process, the second heating element (not shown) continuously heats the coating mounting base 210 and its internal dispensing channel 212. This heating ensures that the adhesive remains within a preset, suitable temperature range throughout its path from the dispensing valve seat 310 to the coating shaft 221, preventing premature cooling, increased viscosity, or even solidification of the adhesive due to low ambient temperature. Subsequently, when the adhesive reaches the coating shaft 221, the first heating element (not shown) installed inside the coating shaft 221 heats the coating shaft 221 itself. Heating the coating shaft 221 further ensures that the adhesive retains its fluidity and adhesion when picked up by the coating shaft 221 and applied to the workpiece surface. This solution ensures that the adhesive remains at an ideal temperature throughout the entire process from entering the coating assembly 2 to the final coating completion, thereby significantly improving the uniformity, stability, and efficiency of the coating process, and providing temperature assurance for achieving a no-clean coating effect.

[0036] Furthermore, the adhesive application assembly 2 further includes a shaft adjustment device 230. This shaft adjustment device 230 includes an adjustment base 231, a scraper shaft adjustment assembly 232, and a position indicator 233. The adjustment base 231 is mounted on the adhesive application mounting base 210, and the scraper shaft adjustment assembly 232 is mounted on the adjustment base 231. The scraper shaft adjustment assembly 232 includes a scraper shaft adjustment cylinder 2321 and an adjustment rod 2322. The driving end of the scraper shaft adjustment cylinder 2321 is connected to the adjustment rod 2322, and one end of the adjustment rod 2322 is fixedly connected to the top end of the scraper shaft 222. The adjustment rod 2322 is used to drive the scraper shaft 222 to rotate via the extension and retraction drive of the scraper shaft adjustment cylinder 2321, and is used to adjust and limit the rotational position of the scraper shaft 222. The position indicator 233 is mounted on the adjustment base 231 and is used to indicate the position and adjustment distance of the scraper shaft 222.

[0037] To control the position of the scraper shaft 222, a shaft adjustment device 230 is introduced. The adjustment base 231 of this device 230 is mounted on the adhesive application mounting base 210. The scraper shaft adjustment cylinder 2321 drives the scraper shaft 222 to rotate via an adjustment rod 2322 connected to its drive end. When the scraper shaft adjustment cylinder 2321 extends or retracts, the adjustment rod 2322 drives the scraper shaft 222 to rotate, thereby changing the relative position between the scraper shaft 222 and the adhesive application shaft 221. Simultaneously, the position display 233 mounted on the adjustment base 231 visually indicates the position and adjustment distance of the scraper shaft 222, allowing operators or control systems to precisely monitor and adjust its position. This structural combination makes the adjustment process of the scraper shaft 222 quantifiable.

[0038] Furthermore, in this embodiment, the adhesive application assembly 2 also includes a photoelectric sensor 240 disposed on the adhesive application mounting base 210. The detection end of the photoelectric sensor 240 is aligned with the adhesive application working cavity 211 between the adhesive application shaft 221 and the adhesive scraper shaft 222. The photoelectric sensor 240 is used to monitor the amount of adhesive liquid in the adhesive application working cavity 211.

[0039] By setting a photoelectric sensor 240 on the adhesive application mounting base 210 and aligning its detection end with the adhesive application working chamber 211, the amount of adhesive liquid in the adhesive application working chamber 211 can be monitored in real time. This allows the external operating system to promptly sense the amount of adhesive liquid in the adhesive application working chamber 211 and take immediate measures to adjust it once an abnormality in the amount of adhesive liquid is detected.

[0040] In this embodiment, the adhesive application assembly 2 further includes an adhesive application base 250, on which the adhesive application mounting seat 210 is mounted. The adhesive application base 250 includes: a fixed plate 251, on one side of which a first driving element 252 and a first slide rail 253 are mounted; and a sliding plate 254, which is slidably mounted on the fixed plate 251 via the first slide rail 253 and is connected and fixed to the adhesive application mounting seat 210. A spring adjustment assembly 255 is mounted on the sliding plate 254, and the operating end of the spring adjustment assembly 255 is connected to the adhesive application mounting seat 210. The first driving element 252 drives the sliding plate 254 to move, thereby causing the spring adjustment assembly 255 and the adhesive application mounting seat 210 to move as a whole. The spring adjustment assembly 255 adjusts the position of the adhesive application mounting seat 210 to provide contact pressure to the substrate to be coated as it passes the adhesive application working position.

[0041] Through the above technical solution, this application provides a position adjustment mechanism for an adhesive application mounting base 210. This adjustment mechanism is used to achieve a position where the plate is tightly attached to the adhesive application work position. Based on the above structure, the driving end of the first driving element 252 can drive the sliding plate 254 to slide on the first slide rail 253 and indirectly drive the adhesive application mounting base 210 to move through the spring adjustment assembly 255. This allows the adhesive application mounting base 210 to move closer to or further away from the plate workpiece, thereby placing the adhesive application mounting base 210 in a set working or non-working state position. When the first driving element 252 is in a non-working state, it can be understood that the adhesive application mounting base 210 is already in a working position close to the workpiece. The spring adjustment assembly 255 can guide the adhesive application mounting base 210 to make fine adjustments, thereby providing the adhesive application mounting base 210 with a contact force that contacts the workpiece cross-section. In this embodiment, the spring adjustment assembly 255 includes a spring component and a screw through which the spring component passes. The screw adjusts the degree of contraction of the spring component, thereby making fine adjustments to the magnitude of the contact force.

[0042] Furthermore, this application further proposes that the adhesive application assembly 2 also includes an adhesive application positioning seat 260, on which an adhesive application base 250 is mounted; wherein, the adhesive application positioning seat 260 includes a drive positioning plate 261, on which a second slide rail 262 is provided; a movable plate 263, on which the movable plate 263 is slidably mounted, and the fixed plate 251 is mounted; a positioning drive element 264, on which the positioning drive element 264 is mounted, and the drive end of the positioning drive element 264 is connected to the movable plate 263, and the positioning drive element 264 is used to adjust the position of the movable plate 263 on the second slide rail 262.

[0043] When the positioning drive element 264 moves, it drives the movable plate 263 to move on the second slide rail 262. Since the fixed plate 251 is installed on the movable plate 263, it can move the fixed plate 251 relative to the first slide rail 253, thereby moving the glue application mounting seat 210 and the glue application base 250 as a whole, which facilitates a large adjustment of the glue application working position of the glue application mounting seat.

[0044] Secondly, an edge banding machine is provided, which uses the equipment described above.

[0045] Since the edge banding machine uses the equipment described above, the edge banding has all the beneficial effects of the equipment described above, which will not be described in detail here.

[0046] This application provides a glue application device and edge banding machine that can achieve cleaning-free operation. By regulating the flow of glue through a closed glue channel 311 and a glue injection valve 320, the glue is ensured to be supplied in a sealed environment, avoiding exposure to air. At the same time, the use of a glue storage mechanism is eliminated, and the amount of melt glue retention is reduced, thereby reducing glue deterioration and cleaning needs, thus achieving a cleaning-free function and making it convenient for users to use.

[0047] Finally, it should be noted that the above-described embodiments are merely specific implementations of this disclosure, used to illustrate the technical solutions of this disclosure, and not to limit them. The protection scope of this disclosure is not limited thereto. Although this disclosure has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that any person skilled in the art can still modify or easily conceive of changes to the technical solutions described in the foregoing embodiments, or make equivalent substitutions for some of the technical features within the scope of the technology disclosed in this disclosure. Such modifications, changes, or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this disclosure, and should all be covered within the protection scope of this disclosure.

Claims

1. A glue application device capable of achieving cleaning-free operation, the glue application device being installed on one side of the conveyor line of an edge banding machine, characterized in that, The device includes: A glue supply assembly, comprising a glue supply unit and a glue supply tube connected to the glue supply unit; An adhesive application assembly, comprising an adhesive application mounting base and an adhesive application unit mounted on the adhesive application mounting base; An injection unit is provided between the glue supply component and the glue application component. The glue injection unit includes a glue injection valve seat and a glue injection valve; The glue injection valve seat is fixedly assembled on the glue application mounting base. The glue injection valve seat has a closed glue channel inside. The glue inlet end of the glue channel is sealed and connected to the glue supply component through the glue supply pipe. The glue outlet end of the glue channel is connected to the glue application mounting base. The glue injection valve is mounted on the glue injection valve seat, and a piston rod is provided on the glue injection valve and the piston rod is located in the glue channel. The glue supply assembly is used to provide glue input. The glue enters the glue channel of the glue injection valve seat along the glue supply pipe and is then supplied to the glue application unit of the glue application assembly. The glue injection valve is used to control the flow of glue in the glue channel.

2. The adhesive applicator according to claim 1, characterized in that: The adhesive mounting base is provided with an adhesive outlet channel, which is connected to the adhesive channel. The adhesive supplied by the adhesive supply component passes through the adhesive channel and the adhesive outlet channel in sequence and is then output from the outlet of the adhesive outlet channel. The ejection direction of the glue outlet of the glue outlet channel forms an angle of 15°-30° with the tangent direction of the coating working surface on the glue coating unit.

3. The adhesive applicator according to claim 2, characterized in that: The glue injection valve includes a first glue injection valve and a second glue injection valve, and the glue channel includes a first glue channel and a second glue channel. The first glue injection valve is arranged on the path of the first glue channel, and the second glue injection valve is arranged on the path of the second glue channel. An adhesive buffer chamber is provided inside the adhesive mounting base. The adhesive buffer chamber is connected to the adhesive dispensing channel and is also connected to the first adhesive channel and the second adhesive channel.

4. The adhesive applicator according to claim 1, characterized in that, The adhesive application mounting base has an adhesive application working chamber, and the adhesive application unit is installed in the adhesive application working chamber; The adhesive application unit includes: A glue-applying shaft, which is rotatably mounted on a glue-applying mounting base; And a scraper shaft, which is rotatably mounted on an adhesive application mounting base and is disposed adjacent to the adhesive application shaft.

5. The adhesive applicator according to claim 4, characterized in that, The adhesive coating assembly also includes: A first heating element is installed inside the adhesive coating shaft. The first heating element is used to heat the adhesive coating shaft or to keep the adhesive coating shaft at a set temperature. The second heating element is mounted on the adhesive application mounting base and is used to heat the adhesive application mounting base or keep the adhesive application mounting base at a set temperature.

6. The adhesive applicator according to claim 4, characterized in that, The adhesive coating assembly also includes: A shaft adjustment device, comprising an adjustment base, a scraper shaft adjustment assembly, and a position display, wherein the adjustment base is mounted on a glue application mounting base, and the scraper shaft adjustment assembly is mounted on the adjustment base; The scraper shaft adjustment assembly includes a scraper shaft adjustment cylinder and an adjustment rod. The drive end of the scraper shaft adjustment cylinder is connected to one end of the adjustment rod, and the other end of the adjustment rod is fixedly connected to the top end of the scraper shaft. The adjustment rod is used to drive the scraper shaft to rotate by the extension and retraction drive of the scraper shaft adjustment cylinder and to adjust and limit the rotation position of the scraper shaft. The position display is mounted on the adjustment base and is used to indicate the position of the scraper shaft and the adjustment distance.

7. The adhesive applicator according to claim 6, characterized in that, The adhesive coating assembly also includes: A photoelectric sensor is installed on the adhesive application mounting base. The detection end of the photoelectric sensor is aligned with the adhesive application working chamber between the adhesive application shaft and the adhesive scraper shaft. The photoelectric sensor is used to monitor the amount of adhesive liquid in the adhesive application working chamber.

8. The adhesive applicator according to claim 1, characterized in that, The adhesive coating assembly also includes: An adhesive base, on which the adhesive mounting bracket is mounted; The adhesive-coated base includes: A fixed plate, on one side of which a first driving element and a first slide rail are mounted; A sliding plate is slidably mounted on a fixed plate via a first slide rail, and the sliding plate is connected and fixed to an adhesive mounting base. A spring adjustment assembly is mounted on the sliding plate, and the operating end of the spring adjustment assembly is connected to the adhesive mounting base. The sliding plate is moved by the first driving element, which in turn moves the spring adjustment assembly and the glue-applying mounting base as a whole. The position of the adhesive mounting base is adjusted by a spring adjustment assembly to provide contact pressure to the substrate to be coated as it passes through the adhesive application work position.

9. The adhesive applicator according to claim 8, characterized in that, The adhesive coating assembly also includes: An adhesive positioning seat, on which the adhesive base is mounted; The adhesive positioning seat includes: A drive positioning plate, wherein a second slide rail is provided on the drive positioning plate; A movable plate, which is slidably mounted on a second slide rail, and the fixed plate is mounted on the movable plate; A positioning drive element is mounted on a drive positioning plate, and the drive end of the positioning drive element is connected to the movable plate. The positioning drive element is used to adjust the position of the movable plate on the second slide rail.

10. An edge banding machine, characterized in that, The edge banding machine uses the adhesive applicator as described in any one of claims 1 to 9.

Images